Flask for sand molds.



PATBNTED JAN. 29', 190'?.

J. MACPHAIL. K FLfAsK POR SAND MOLDS.

APPLIGATION FILED APR.2, 1906.

Uivrrnnv4 sin/mins"'rL/-vrmvr'e onirica.

" JAMES MACPHAIL, o iiDAviJNPoRT,1fr owA.

FLASK FOR SNDMOLDS,

Nolsia'sea specification fLetters Patent.

Tp'jttlZaphonz, it may concern:

Be it lknown that I, JAMES MACPHAIL, a citizenfof the United. States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Flasks for Sand Molds, of

A which I do-declare the following to be a full,

clear, and exactdescription, reference being had to the accompanying drawings, forming part of this specification.

The present invention has relation to the improvement o f flasks designed formaking sandmolds for castings, the object of the invention being to provide improved means whereby theaccidentaldropping'of the molds from the flask while the latter is being handled may be avoided. This object of the invention panymg drawings is .a taper flask comprising a'cope A and drag B, adapted to be alined and connected by means of the horizontallyprojecting l'ugs a and b and pins or bolts c.

The cope A has mounted upon itsouter walls suitable sand-supports that are provided with inwardly-extending portions adapted to be projected beyond the inner face of the Wall of the cope in order to retain the sand mold therein until it is desired to strip the flask from the mold. In the preferred form of the invention the sand-supports F consist of plates having their lower edges turned inwardly and, by preference, formed as fin ers f, these fingers being adapted to enter sIots formed in the side walls of -the cope A. As shown, each of the sand-supports F is fixed to a bar D, that is mounted in bearings or supports d, so that a pivotal movement is given to the sand-supports as they are shifted into and out of operative position.

One important feature of my present invention'is that of connecting the sand-supports to the handle whereby the`cope is lifted, so that the handle shall serve not merely as a means for lifting the cope, but shall serve also to hold the .sand-supports in operative position while the copeislraised. As shown,.

the bars D, that :carry: the sand-suplprtsF, and hence it willb'e -sefen that whent e ,han-1 Patented Jan.,29,' 1907iN f Application filed April 2,1906. Serial No.809,262. l t

the handles Dl 'are-.formed as extensions of l (f5 dles D are grasped by the molder in the act 6o of lifting the cope A the handles D', throu the medium of the bars D, will serve to ho d;

with their fingers f extending beyond the in-Q the sand-supports in operative position-fige.;

ner face of the flask-wall. So, also, itWill be 65 i l seen that when the cope A has'been placed in. position upon the drag B the weight ofthe handles D-will cause the bars D to turn, and.

thus automatically withdraw the sand-sup.;

ports F from'operative position, therebyper-"gjp f' mittinv the flask to be freely -strippedfrom It is desirable to retain the `sand-supports. in operative position during the time that the, cope is being filled 'and rammed and one feature of my invention is thegproyin sion of means for automatically holding the sand-supports in operative position at such tune. One simple means for effecting this automatic holding of the sand-supports in 8o' operative position consists in forming' angu-v lar extensions D? .on the lends of the pivoted bars D; these extensions D2being arranged at such an angle with respect to the sand-supports that /when the cope"'iset upon a flat 8 5 surface w-as, for example,',fupon the bed- 3 plate of a molding-machjne-the ends of the extensions D2 wi'llcontact with the flat surface and will be raised therebly, thus shifting the sand-support's'to operative position, as 9o shown in Fig. 4, and holding them 1n 'such position until the cgpe islifted from the'iiat-' surface. n l

From the foregoing description it will be seen -that when the'copeA is set upon the bed 95 of the molding-machine or other flat surface to feceive its charge of sand the extensions D2, by their engagement With such'surface, will cause the fingersf of the sand-supports to roject beyond the inner face of the copef zoo wL l, and thelsandsupports will thusbe held in o erative position and against danger of disp acement while the sand is being rammed into the cope. When the molder desires to lift the cope, he will grasp the handles D and 105 I i by so doing will retain the sand-sup Orts in.' 1

operative position, so as to revent t e accident-al dropping of the mol s from the cope.

When the cope has been set in position upon the drag B, the weight ofthe handles D will no cause the sand-supports to be automatically shifted out of operative position, so that theyv trl will not interfere with the lifting of the flask from the mold` which will be effected by the melder grasping the lugs b of the drag in the usual manner.

It is manifest that the precise details of construction above set out may be varied Within wide limits without departing from the spirit of the invention and that features of 'the invention may be employed without its projecting the sand-supports beyond the ina ner face of the flask-wall.

, 3. A flask for sand molds having movable sand-supports and vertically-movable handles for lifting said flask and for shifting said sand-supports, said handles having unsup ported ends arranged to drop and automatici ally shift the sand-supports out of operative position.

4.v A flask for sand mold's having a sandsupport, a vertically-movable handle connected to said sand-support whereby when the handle is lifted the sand-support- Will be moved into operative position, and having a part connected to said sand-support and adapted to extend below .the bottom of the flask-wall whereby when the flask is su ported on a flat surface to be rammed t e sand-support will be moved into operative posnion.

5. A flask for sand molds havingone or more movable sand-supports, means for automatically projecting said sand su port or supports beyond the inner face of tlie flaskwall and means for withdrawing the sand support or su )ports from operative position when the flask is to be lifted from the mold.

6. A flask for sand molds having one or more movable sand-supports adapted, when in operative position, to project beyond the inner face of the flask-wall, and means for automatically withdrawing the sand-supports from operative position to permit the flask to be lifted from the mold.

JAA/IES MACPHAIL.

VVit-nesses: A

KATHARINE GERLAoI-I, LILLIAN PRENTioE. 

